Improvement in sickle-grinder



lhrtd Stabat JONES, or LOWELL, WISCONSIN.

'Letters Patent No. 98,693, dated January 11, 1870.

IMPROVEMENT IN SICKLE-GRINDER The Schedule referred to in these LettersPatent and making part of the same.

To all Iwhom 'it 'may concern Be it known that I, A. B. J ONES, ofLowell, in the county of Dodge, and State of Wisconsin, have inventedanew and useful Improvement in Sickle- Grinders; and I do hereby declarethat the following is a fnll and exact description thereof, referencebeing had to the accompanying drawings, and letters marked thereon,making a part of this description, in which- Figure l is a perspectiverepresentation of my invention.

Figure 2, the part claimed to be new, removed from the other parts.

The present invention relates to an improvement in that class ofgrinders whichis `designed more especially for sharpening the knives ofmowers and rcapers, without removing them from the sickle-bar; and

Its nature consists in combining, with an emerywheel and suitablegearing, an adjustable spring-stand, which is used to support the knivesof the sickle-bar,

and which is so constructed that the knives may beY ground on any bevelrequired.

C C represent an Ordinary iron stand, which is prois provided withahole, D, for the convenience of bolting it fast to a bench or otherconvenient foundation, and to which an adj ustable standard, B, providedwith a slot, E, isheld by means of a bolt and nut`F.

rlhis standard B supports the shaft of adrive-wlleel, (l, and one end ofa shaft-,11, which supports a pinion,- T, and an emery-wheel, L, theother end of the shaft being supported hy a curved arm, I, fastened tothe standard B at J, as shown in iig. 1.

` The stand C C supports an arm, A, which is provided with a socket, M,at its upper end, in which the lower end of a coil spring, N, is placed.

The vupper end of this spring lits into a socket, O, which is rigidlyfastened to a bed-plate, P, on which the sickle-bar Q is placed when theknives V are being ground, the plate P having a depression, R, made inthe central part of its upper side, permits the stone L to passdown'between the knives,` and a holt, S, iig. 2, beingput through thesockets O M, and through the cent-re of the spring N, holds the latterin place.

By means of this construction and arrangement, the sickle-bar Q, mayhave any angie or position, relative to the periphery of' the stone L,which is required, or may be necessary to grind the knives V.

The operation is very simple,'reqn,ring only that the wheel G be put inmotion, and the sickle-bar Q so held and turned on the bed P as toproperly bring the knives under the wheel L, said bed readily incliningin any required direction for this purpose.

Having thus described myinvention,

What I claim, and desire to secure by Letters Patent of the UnitedStates, is-

The adj ustahle bed P, provided with a depression, It, and socket O, incombination with the spring N,

holt S, and socket M, arranged with lreference to the` stand C C,standard B, wheel G, pinion T, shaft H, and wheel L, as set forth.

A. B. JONES.

Witnesses:

M. ZABEL, Y F. P. OATLlN.

